@@ -42,6 +42,7 @@
#include <linux/completion.h>
#include <linux/fb.h>
#include <linux/pci.h>
+#include <linux/efi.h>
#include <linux/hyperv.h>
@@ -461,13 +462,13 @@ static int synthvid_connect_vsp(struct hv_device *hdev)
goto error;
}
- if (par->synthvid_version == SYNTHVID_VERSION_WIN7) {
+ if (par->synthvid_version == SYNTHVID_VERSION_WIN7)
screen_depth = SYNTHVID_DEPTH_WIN7;
- screen_fb_size = SYNTHVID_FB_SIZE_WIN7;
- } else {
+ else
screen_depth = SYNTHVID_DEPTH_WIN8;
- screen_fb_size = SYNTHVID_FB_SIZE_WIN8;
- }
+
+ screen_fb_size = hdev->channel->offermsg.offer.
+ mmio_megabytes * 1024 * 1024;
return 0;
@@ -635,22 +636,33 @@ static void hvfb_get_option(struct fb_info *info)
/* Get framebuffer memory from Hyper-V video pci space */
static int hvfb_getmem(struct fb_info *info)
{
- struct pci_dev *pdev;
+ struct pci_dev *pdev = NULL;
ulong fb_phys;
void __iomem *fb_virt;
+ int gen2vm = efi_enabled(EFI_BOOT);
- pdev = pci_get_device(PCI_VENDOR_ID_MICROSOFT,
+ if (gen2vm) {
+ if (!hyperv_mmio_start || hyperv_mmio_size < screen_fb_size) {
+ pr_err("Unable to find ACPI MMIO area\n");
+ return -ENODEV;
+ }
+
+ fb_phys = hyperv_mmio_start;
+ } else {
+ pdev = pci_get_device(PCI_VENDOR_ID_MICROSOFT,
PCI_DEVICE_ID_HYPERV_VIDEO, NULL);
- if (!pdev) {
- pr_err("Unable to find PCI Hyper-V video\n");
- return -ENODEV;
- }
+ if (!pdev) {
+ pr_err("Unable to find PCI Hyper-V video\n");
+ return -ENODEV;
+ }
- if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM) ||
- pci_resource_len(pdev, 0) < screen_fb_size)
- goto err1;
+ if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM) ||
+ pci_resource_len(pdev, 0) < screen_fb_size)
+ goto err1;
+
+ fb_phys = pci_resource_end(pdev, 0) - screen_fb_size + 1;
+ }
- fb_phys = pci_resource_end(pdev, 0) - screen_fb_size + 1;
if (!request_mem_region(fb_phys, screen_fb_size, KBUILD_MODNAME))
goto err1;
@@ -662,14 +674,22 @@ static int hvfb_getmem(struct fb_info *info)
if (!info->apertures)
goto err3;
- info->apertures->ranges[0].base = pci_resource_start(pdev, 0);
- info->apertures->ranges[0].size = pci_resource_len(pdev, 0);
+ if (gen2vm) {
+ info->apertures->ranges[0].base = screen_info.lfb_base;
+ info->apertures->ranges[0].size = screen_info.lfb_size;
+ } else {
+ info->apertures->ranges[0].base = pci_resource_start(pdev, 0);
+ info->apertures->ranges[0].size = pci_resource_len(pdev, 0);
+ }
+
info->fix.smem_start = fb_phys;
info->fix.smem_len = screen_fb_size;
info->screen_base = fb_virt;
info->screen_size = screen_fb_size;
- pci_dev_put(pdev);
+ if (!gen2vm)
+ pci_dev_put(pdev);
+
return 0;
err3:
@@ -677,7 +697,9 @@ err3:
err2:
release_mem_region(fb_phys, screen_fb_size);
err1:
- pci_dev_put(pdev);
+ if (!gen2vm)
+ pci_dev_put(pdev);
+
return -ENOMEM;
}